Overview

The main goal of Django URL Filter is to provide an easy URL interface
for filtering data. It allows the user to safely filter by model
attributes and also allows to specify the lookup type for each filter
(very much like Django’s filtering system in ORM).

For example the following will retrieve all items where the id is
5 and title contains "foo":

example.com/listview/?id=5&title__contains=foo

In addition to basic lookup types, Django URL Filter allows to
use more sophisticated lookups such as in or year.
For example:

example.com/listview/?id__in=1,2,3&created__year=2013

Requirements

Python 2.7, 3.x, pypy or pypy3

Django 1.8+ (there are plans to support older Django versions)

Django REST Framework 2 or 3 (only if you want to use DRF integration)

Installing

Easiest way to install this library is by using pip:

$ pip install django-url-filter

Usage Example

To make example short, it demonstrates Django URL Filter integration
with Django REST Framework but it can be used without DRF (see below).

Above will automatically allow the use of all of the Django URL Filter features.
Some possibilities:

# get user with id 5
example.com/users/?id=5
# get user with id either 5, 10 or 15
example.com/users/?id__in=5,10,15
# get user with id between 5 and 10
example.com/users/?id__range=5,10
# get user with username "foo"
example.com/users/?username=foo
# get user with username containing case insensitive "foo"
example.com/users/?username__icontains=foo
# get user where username does NOT contain "foo"
example.com/users/?username__icontains!=foo
# get user who joined in 2015 as per user profile
example.com/users/?profile__joined__year=2015
# get user who joined in between 2010 and 2015 as per user profile
example.com/users/?profile__joined__range=2010-01-01,2015-12-31
# get user who joined in after 2010 as per user profile
example.com/users/?profile__joined__gt=2010-01-01

Features

Human-friendly URLs

Filter querystring format looks
very similar to syntax for filtering in Django ORM.
Even negated filters are supported! Some examples:

Support related fields so that filtering can be applied to related
models. For example:

example.com/users/?profile__nickname=foo

Decoupled filtering

How URLs are parsed and how data is filtered is decoupled.
This allows the actual filtering logic to be decoupled from Django
hence filtering is possible not only with Django ORM QuerySet but
any set of data can be filtered (e.g. SQLAlchemy query objects)
assuming corresponding filtering backend is implemented.

Usage-agnostic

This library decouples filtering from any particular usage-pattern.
It implements all the basic building blocks for creating
filtersets but it does not assume how they will be used.
To make the library easy to use, it ships with some integrations
with common usage patterns like integration with Django REST Framework.
This means that its easy to use in custom applications with custom
requirements (which is probably most of the time!)

License

The MIT License (MIT)
Copyright (c) 2015, Miroslav Shubernetskiy
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.